Well, I finally got around to replacing my chain and cassette after 4600 miles. I have Ultegra hubs with the little spacer which is required when using a 7-speed cassette on a 8/9 speed hub. When I tried to install my NOS 7-speed cass, the locknut wouldn't thread on because the cassette was sitting 'too high'. Seems the new cassette's three rivet heads protrude beyond the big cog's surface, much more than my OEM cassette's rivets. The OEM cassette's rivet heads were kinda 'flathead' style, if you know what I mean.
So my question: should I drill three pockets in the spacer for the rivet heads so the cassette's largest cog sit flush against the spacer? I kinda hate to do this because I think pocket needs to be at least half of the spacer's thikness. If anyone else had this problem and better yet, a solution, I'd surely be grateful to hear your story.
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